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Statistical Atlas

Average Weather In June For Bar Harbor, Maine, USA

Location

This report describes the typical weather at the Hancock County-Bar Harbor Airport (Bar Harbor, Maine, United States) weather station over the course of an average June. It is based on the historical records from 1992 to 2012. Earlier records are either unavailable or unreliable.

Bar Harbor, Maine has a humid continental climate with warm summers and no dry season. The area within 25 mi of this station is covered by forests (60%), oceans and seas (33%), and lakes and rivers (6%).

Temperature

The month of June is characterized by rising daily high temperatures, with daily highs increasing from 64Â°F to 72Â°F over the course of the month, exceeding 80Â°F or dropping below 55Â°F only one day in ten.

Daily Hours of Daylight and Twilight in June

The number of hours during which the Sun is visible (black line), with various degrees of daylight, twilight, and night, indicated by the color bands. From bottom (most yellow) to top (most gray): full daylight, solar twilight (Sun is visible but less than 6Â° from the horizon), civil twilight (Sun is not visible but is less than 6Â° below the horizon), nautical twilight (Sun is between 6Â° and 12Â° below the horizon), astronomical twilight (Sun is between 12Â° and 18Â° below the horizon), and full night.

The earliest sunrise is at 4:48am on June 12; the latest sunset is at 8:23pm on June 29; the latest sunrise is at 4:53am on June 30; the earliest sunset is at 8:11pm on June 1.

Daylight saving time is observed in 2012 but it neither starts nor ends in June, so the entire month is in daylight time.

Daily Sunrise & Sunset with Twilight and Daylight Saving Time in June

The solar day over the course of the year 2012 . From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (solar, civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the "DST" labels.

Clouds

The median cloud cover ranges from 53% (partly cloudy) to 68% (partly cloudy). The trend is for the sky to be clearing rapidly with the median cloud cover decreasing by 15% from the start to the end of the month.

Median Cloud Cover in June

The median daily cloud cover (black line) with percentile bands (inner band from 40th to 60th percentile, outer band from 25th to 75th percentile).

On June 30, the clearest day of the month, the sky is clear, mostly clear, or partly cloudy46% of the time, and overcast or mostly cloudy42% of the time.

On June 1, the cloudiest day of the month, the sky is overcast, mostly cloudy, or partly cloudy50% of the time, and clear or mostly clear38% of the time.

Cloud Cover Types in June

The fraction of time spent in each of the five sky cover categories. From top (most blue) to bottom (most gray), the categories are clear, mostly clear, partly cloudy, mostly cloudy, and overcast. Pink indicates missing data. Outside of the United States clear skies are often reported ambiguously, leading them to be lumped in with the missing data.

Precipitation

The average probability that some form of precipitation will be observed in a given day is 5%, with little variation over the course of the month.

Probability of Precipitation at Some Point in the Day in June

The fraction of days in which various types of precipitation are observed. If more than one type of precipitation is reported in a given day, the more severe precipitation is counted. For example, if light rain is observed in the same day as a thunderstorm, that day counts towards the thunderstorm totals. The order of severity is from the top down in this graph, with the most severe at the bottom.

Throughout June, the most common forms of precipitation are thunderstorms.

Thunderstorms are the most severe precipitation observed during 100% of those days with precipitation. They are most likely around June 29, when it is observed during 6% of all days.

Types of Precipitation Throughout June

Relative frequency of various types of precipitation over the course of a typical June.

Snow

Either snow is exceptionally unlikely to fall at this location in June or this station does not reliably report precipitation types.

Humidity

The relative humidity typically ranges from 53% (mildly humid) to 94% (very humid) over the course of a typical June, rarely dropping below 31% (comfortable) and reaching as high as 100% (very humid).

The air is driest around June 1, at which time the relative humidity drops below 67% (mildly humid) three days out of four; it is most humid around June 30, rising above 91% (very humid) three days out of four.

Relative Humidity in June

The average daily high (blue) and low (brown) relative humidity with percentile bands (inner bands from 25th to 75th percentile, outer bands from 10th to 90th percentile).

Dew Point

Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.

Over the course of a typical June, the dew point typically varies from 41Â°F (dry) to 60Â°F (comfortable) and is rarely below 32Â°F (dry) or above 66Â°F (muggy).

The time of the month between June 1 and June 30 is the most comfortable, with dew points that are neither too dry nor too muggy.

Wind Speed in June

The average daily minimum (red), maximum (green), and average (black) wind speed with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).

The wind is most often out of the south west (17% of the time), north (17% of the time), north west (13% of the time), and south (12% of the time). The wind is least often out of the south east (4% of the time).

Wind Directions in June

The fraction of time spent with the wind blowing from the various directions over the entire year. Values do not sum to 100% because the wind direction is undefined when the wind speed is zero.

Fraction of Time Spent with Various Wind Directions in June

The fraction of time spent with the wind blowing from the various directions on a daily basis. Stacked values do not always sum to 100% because the wind direction is undefined when the wind speed is zero.